That does appear to be internal organs. I've had it happen a few times and there's nothing that can be done for that, unfortunately. You can wait if you are really not sure--yolk will shrivel and dry up or absorb. You should be able to confirm that it's not yolk. Culling is up to the individual. Either sharp scissors which are like a mini-axe, starter fluid (NOT lighter fluid) in a closed container with the chick or vinegar and baking soda (which creates CO2) in a container placed inside a second container with the chick. Don't know any proportions for that.
